Safety anchor



bringing a dillerent entren stares PATENT OFFICE.

CHAR/LES DOWLER, OF FELLOWS, GALIFRNI.

lamener monos.

Speliieetion of Lettere Patent.

mesma.

Application llled Merch 16, 1921. Serial No. 452,740.

sist the ordinary pull lexerted. 4on the cap, 'automobile tank by' left unscrewed, of an u the rapid motion of the inseln/ne, land still can be easily removed fronr'said tank by kind ollpiessure to bearv on the saine. l

l'attainthese objects by thel mechanism 1 illustrated-in the accompanying drawing,

' the cap vlatter shown in section,

in which Figure tion of my 'anchor 'fastened toa cap, the and Figure 2 a sectional view of a tank provided with my anchoring device. 1

The tank 1 is assumed to be the gasoline tank of an automobile, its top having a cylindrical opening (2) on' which the cap (lf3) is screwed. Through a perforation (it) in said cap extends the bolt (6) which securely holds, between the underside of the cap and the nut (7),@1 perforated member (8) lastenn ed to one endoln4 the chain The other end of the chain (9) which hangs down from when the latter is screwed to the tank, carries the'- anchor (l1).

The latter is formed of two angles, (l2) and (l4),two sides ot which, ('16) and (1.7), hereinafter referred to as the arms, have been joined to form a third angle, a spring loop being formed at each ,of the three verticos (1S) (19) and (20). The free sides (22) and (23) oit' the two angles (19.) and (lll) will behereinalter referred to as the.

w ings.

The anchor can be easily'and quickly rnade out of one string; of wire. rlfhe loop (lil) is bent' into the nenti-al part of the wire, on a horizontal axis, the arxns (1(5) and (i7) emerging from said loop downwardly, in angular relation to cach other. Then the loops (lll) and (20) are bent into the tree ends of said wire, the wings (22) and 23) emerging from said loops npwarddy,l in an guiar relation to the arms (16) and 17) respectively. v

-be reduced by 1 represents aside eleva-f The .spread of the anchor, that is`,`the lateral distance between the tips of the two wmgs, is larger than the diameter ol. the

hole (2) It is evident, then, that in passing the holethe spread. must be reduced. It can same may he errerted directly by pressure of `the 'hand on either the arms or the wings, and if thus applied, thev anchor will pass the hole either way. 'Lateral pressure may also be applied as a component of angular pressure and as such it can ne applied to the anchor only when the same passes the hole 1n a downward directwn, 'for only in that vcase will the inclined wings bearagainst the y circular wall of the hole and allow the an-`4 chor to slip through the hole. Going upwardly,

upward the hole,

bend the anchor completely out of shape.

Since the pull exerted on the anchor by pull can cause the anchor to pass the cap is not necessarily straight upward,A

but may be angular, in fact usually will be somewhat like it is indicated on the dotted lines in the drawing, care must bevtalren in constructing the anchor tohave the distance between the tip of one wing and any point on the other arm exceed in length the diameter of the hole in. the tank, since otherwise the anchor might slip throu h the hole.

lt is understood-that while l have conlined. this deserip'tion to 'the gasoline tank of an automobile, my anchor may be used on any other tank using a cap and to radiators as well.

l claim:

In combination with a tank having a hole.'

therein and a cap for closing the same, an anchor for the cap adapted 'to offer greater resistance to its removal than to its insertion through the hole, said lanchor cornprising a wire having a central loop' and two arms ent-ending downwardly from the saine in angular relation/to eachother, each arm being lient into a loop from which a. wing; emerges in' the plane of the arms and extending; upwardlyY the spread of the wings wider than the site ofthe hole so that its points lirnily grip the portion ot' the 'tanlc adjacent to the hole, and a tlexible connection between the central loop and the cap.

CHARLES R. OWVLER.

Patented Feb. es, 1922.1

lateralpressure only. The

there is no inclined plane to bear' aga-inst the wall of the opening and no more.

unless the pull is strong enough to sev 

